Long distance intramolecular photoinduced electron transfer in donor–acceptor systems: effect of exothermicity on electron-transfer rates

Abstract

Photoinduced intramolecular electron transfer in donor–acceptor systems separated by a long distance are studied by fluorescence quenching experiments; reduced rate constants for electron transfer are observed in highly exothermic reactions, which indicates the existence of an ‘inverted region’, in accord with Marcus' model.